Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6648384 | Bumper crush tower with rings of varied strength | David W. Heatherington, Scott Glasgow, Jack Russell | 2003-11-18 |
| 6643931 | Method of manufacturing a one-piece tubular doorbeam | — | 2003-11-11 |
| 6622450 | Roll-formed and stamped doorbeam | Melvin J. Guiles, David W. Heatherington | 2003-09-23 |